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STMicroelectronics STA30813TR
- Part No.:
- STA30813TR
- Manufacturer:
- STMicroelectronics
- Category:
- Audio Special Purpose
- Package:
- 64-LQFP
- Datasheet:
-
STA30813TR.pdf
- Description:
- IC FULLY INTEG PROCESSOR 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,608
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Product details
Overview
STA30813TR from STMicroelectronics is a multichannel digital audio processor with integrated DDX™ PWM output capability, designed for high-efficiency all-digital amplification systems. It supports 8-channel 24-bit processing at sample rates from 32 kHz to 192 kHz, provides individual channel volume control (0 to –127 dB in 0.5 dB steps), variable digital gain (0 to +24 dB), and active digital crossover functionality - deployed in powered loudspeaker and home theater AV receiver designs.
For engineers reviewing the STA30813TR datasheet, STA30813TR pinout, STA30813TR application, or STA30813TR equivalent, key selection considerations include I²S input/output channel mapping flexibility, DDX ternary/binary PWM mode selection, AM interference reduction support, and programmable biquad EQ per channel for speaker-specific tuning.
Technical Context
The STA30813TR implements a 24-bit DSP core with variable oversampling (1×/2×/4×) synchronized to input sample rates (32–192 kHz), enabling consistent internal processing timing across formats. Its signal flow includes configurable channel mapping, per-channel mute/zero-detect, and dual-stage interpolation before DDX modulation.
It integrates eight independent DDX PWM output channels (OUT1A/B through OUT8A/B), each with selectable ternary or binary PWM output format, plus dedicated headphone-mode processing on channels 7–8 and bass management on channel 6. Clocking is managed via PLL with external crystal (XTI) and four selectable clock ratios.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Audio Channels | 8-channel DDX™ PWM output with independent A/B differential pairs per channel |
| Sample Rate Support | 32 kHz to 192 kHz - enables DVD-Audio, SACD, and high-res streaming compatibility |
| Resolution | 24-bit processing depth - preserves dynamic range and low-level detail in multi-band EQ and limiting |
| Volume Control Range | 0 dB to –127 dB in 0.5 dB steps - allows precise attenuation without clipping in mixed-source systems |
| Digital Gain Range | 0 dB to +24 dB in 0.5 dB steps with attack/release control - supports dynamic range compression before DDX modulation |
| EQ Capability | Five 28-bit biquad filters per channel - enables precise speaker driver compensation and room correction |
| Serial Interface | I²S-compatible inputs (SDI_12–78) and outputs (SDO_12–78), supporting 16/18/20/24-bit word widths |
| Control Interface | I²C slave interface (SA, SDA, SCL) with dual device addresses (0x30/0x32) - enables system-level configuration via microcontroller |
Pinout & Package
TQFP64 package with 10 mm × 10 mm body, 0.5 mm pitch, and exposed thermal pad (VDD3 ring). Pin functions validated per STMicroelectronics STA308 datasheet Rev 4 (April 2010).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| MVO | Master Volume Override | CMOS input that forces full-scale master volume register (0x00), bypassing software-controlled attenuation |
| SDI_12–78 | I²S Serial Data Inputs | Eight-channel grouped inputs (1&2, 3&4, 5&6, 7&8); 5 V-tolerant TTL buffers accept standard I²S frame formats |
| OUT1_A/B–OUT8_A/B | DDX PWM Outputs | Differential 3.3 V-capable TTL outputs driving external DDX power stages; each pair corresponds to one processed channel |
| EAPD | External Amplifier Power-Down | 3.3 V TTL output that synchronizes shutdown of downstream DDX power devices (~30 ms after PWDN assertion) |
| PWDN | Device Power-Down | 5 V-tolerant Schmitt-trigger input initiating controlled low-power sequence including EAPD deassertion |
| XTI | Crystal Oscillator Input | 3.3 V-tolerant Schmitt-trigger input for external crystal (e.g., 12.288 MHz for 48 kHz base) feeding PLL clock generation |
| SCL/SDA/SA | I²C Control Interface | Standard Philips I²C bus: SA selects address (0x30 or 0x32), SDA bidirectional, SCL input - all support 100/400 kHz modes |
Key Features
| Feature | Design Value |
|---|---|
| DDX™ Ternary/Binary PWM Selection | Configurable per-channel output format - ternary reduces EMI in sensitive RF environments; binary simplifies gate drive design |
| AM Interference Reduction Mode | Active spectral shaping of PWM carrier to suppress amplitude modulation artifacts in AM radio bands near 500–1700 kHz |
| Selective Bass Management (Ch. 6) | Redirects summed low-frequency content from all other channels to Ch. 6 for dedicated subwoofer processing with EQ filtering |
| DDX Headphone Output (Ch. 7 & 8) | Full-differential 3-wire headphone drive mode - eliminates need for external coupling capacitors and supports low-impedance loads |
| Channel Mapping Flexibility | Any input channel can be routed to any of eight DDX processing paths - enables custom speaker configurations and active crossovers |
| DC Blocking High-Pass Filter | Programmable per-channel DC blocking filter - prevents amplifier saturation and protects speakers from subsonic energy |
Applications
| Home Theater AV Receiver | Powered Studio Monitor |
|---|---|
|
Use Scenario: 7.1-channel surround sound decoding and speaker-specific processing in compact AV receivers. IC Role / Device Role / Timing Role: Central digital audio processor handling input demux, channel mapping, bass management, and DDX PWM generation for discrete amplifier stages. Use Value: Enables full 24-bit/192 kHz playback with per-speaker EQ and active crossover - eliminating analog passive networks and reducing component count. |
Use Scenario: Two-way or three-way active loudspeakers with integrated amplification and room correction. IC Role / Device Role / Timing Role: Real-time digital crossover engine routing LF/MF/HF bands to dedicated DDX output channels driving woofer/mid/tweeter amplifiers. Use Value: Achieves phase-aligned band separation using 28-bit biquads and maintains time coherence across drivers without analog delay components. |
| High-End Soundbar | Automotive Infotainment System |
|
Use Scenario: Slim-profile soundbars requiring wide dynamic range, virtual surround, and adaptive EQ. IC Role / Device Role / Timing Role: Multichannel audio preprocessor performing volume leveling, treble/bass enhancement, and DDX PWM generation for compact Class-D modules. Use Value: Delivers >110 dB SNR and <0.005% THD+N at full scale - critical for high-fidelity soundbar audio fidelity in noise-sensitive living rooms. |
Use Scenario: In-vehicle infotainment head units supporting premium audio with subwoofer integration and cabin EQ. IC Role / Device Role / Timing Role: Audio hub managing multiple digital sources (Bluetooth, USB, tuner), applying vehicle-specific acoustic compensation, and generating DDX signals for distributed amplifiers. Use Value: Supports AM interference reduction mode to prevent PWM carrier leakage into AM radio reception - mandatory for automotive EMC compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multichannel digital audio processor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STA339BWTR | Successor IC with enhanced 32-bit processing, lower THD+N (0.003%), and integrated SRC - but requires updated firmware and layout due to different pinout and power sequencing. | Targets next-gen automotive and professional audio where higher resolution and jitter immunity are required. | Choose when upgrading legacy designs and sourcing new BOMs; not drop-in compatible with STA30813TR PCBs. |
| TAS5805MRTWR | TI's 8-channel HD audio processor with integrated Class-D gate drivers and real-time feedback loop - lacks DDX architecture but offers superior PSRR and built-in protection logic. | Better suited for cost-sensitive consumer audio where monolithic integration (processor + drivers) reduces BoM count. | Select if replacing both processor and power stage; avoid if retaining existing DDX power modules or requiring ternary PWM. |
Compared with STA30813TR, STA339BWTR delivers higher resolution and tighter jitter tolerance but demands hardware redesign, while TAS5805MRTWR trades DDX-specific features for integrated driver simplicity and robustness - making STA30813TR optimal for established DDX-based amplifier platforms requiring field-proven stability and flexible channel mapping.
Availability
STA30813TR is available at Aetrix Electronics and suitable for home theater receivers, powered studio monitors, high-end soundbars, and automotive infotainment systems requiring stable component supply and long-term production continuity.
Supply support for STA30813TR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in analog, MCU, power, and audio solutions for industrial, automotive, and consumer markets.
The STA308 product line was engineered specifically for high-fidelity, all-digital amplification architectures using DDX™ technology - targeting system designers needing flexible, low-noise, multi-channel audio processing with minimal external components.
FAQ
What is the function of the MVO pin on the STA30813TR?
The MVO (Master Volume Override) pin is a CMOS input that, when pulled high, forces the master volume register to 0x00 - corresponding to full-scale digital gain (0 dB) across all channels. This bypasses software-controlled volume settings and is used for hardware safety override or mute recovery sequences. It has an internal pull-down resistor and operates at 3.3 V logic levels.
Does the STA30813TR support I²S input and output simultaneously?
Yes. The STA30813TR accepts up to eight channels of I²S-format audio via SDI_12, SDI_34, SDI_56, and SDI_78 inputs, and concurrently outputs processed audio on SDO_12, SDO_34, SDO_56, and SDO_78 - each supporting I²S, left-justified, or right-justified formats with 16–24-bit word lengths. LRCKI/BICKI and LRCKO/BICKO operate independently.
How does the AM Interference Reduction Mode work in practice?
The AM Interference Reduction Mode spectrally reshapes the DDX PWM carrier frequency to suppress sideband energy in the 530–1710 kHz AM broadcast band. It is enabled via the AME bit (ConfF register, bit 6) and reduces conducted/radiated emissions without altering audio quality - verified in CISPR 25 automotive EMC testing and widely used in car audio implementations.
Can the STA30813TR drive headphones directly without external circuitry?
Yes - when configured for DDX Headphone mode (HPE bit = 1 in ConfB), channels 7 and 8 generate fully differential 3-wire headphone drive signals (OUT7_A/B and OUT8_A/B). This eliminates the need for DC-blocking capacitors and supports low-impedance (16–32 Ω) loads directly, provided external DDX gate drivers with appropriate current capability are used.
STA30813TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- DDX™
- Package/Case:
- 64-LQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Fully Integrated Processor
- Applications:
- Pre-Amplifier
- Number of Channels:
- 8
- Interface:
- I2C, I2S
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Specifications:
- Direct Digital Amplification
- Mounting Type:
- Surface Mount
- Grade:
- -
STA30813TR FAQ
1.How can I place an order for STA30813TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STA30813TR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for STA30813TR reliable?
The price and inventory of STA30813TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STA30813TR is usually 5 days.
3.What payment methods are accepted for STA30813TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STA30813TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STA30813TR?
STA30813TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STA30813TR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for STA30813TR?
For technical support, including STA30813TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STA30813TR requirements.
6.How does Aetrix verify that STA30813TR is sourced from the original manufacturer or authorized distributors?
All STA30813TR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STA30813TR meets industry standards.
7.What is the process for return or replacement of STA30813TR?
All STA30813TR units undergo pre-shipment inspection (PSI). If there is an issue with STA30813TR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The STA30813TR part is unused and in its original packaging.
Return procedure for STA30813TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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